Solo 401K and foreign earned income exclusion -- turbotax error?

[expatsp]

I asked Turbotax to calculate the maximum amount I can donate to a solo 401K, elective deferral + profit sharing. In calculating profit sharing, it appears not to take into account that I've excluded part of my income with the FEIE. Is this indeed a flaw, or should I trust the number that Turbotax provides?

[dmertz · Accepted solution]

From IRS Pub 560:

Net earnings from self-employment doesn't include items excluded from gross income (or their related  deductions) other than foreign earned income and foreign housing cost amounts. [Emphesis added.]

[dmertz]

IRS Pub 560:  <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/p560.pdf">https://www.irs.gov/pub/irs-pdf/p560.pdf</a>